大约有 35,800 项符合查询结果（耗时：0.0500秒） [XML]
How do I strip non alphanumeric characters from a string and keep spaces?
...ces to the negated character group:
@search_query = @search_query.gsub(/[^0-9a-z ]/i, '')
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Choosing the default value of an Enum type without having to change values
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The default for an enum (in fact, any value type) is 0 -- even if that is not a valid value for that enum. It cannot be changed.
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How do I create a datetime in Python from milliseconds?
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Just convert it to timestamp
datetime.datetime.fromtimestamp(ms/1000.0)
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How to convert a number to string and vice versa in C++
...g to numeric
float stof(const string& str, size_t *idx = 0);
double stod(const string& str, size_t *idx = 0);
long double stold(const string& str, size_t *idx = 0);
int stoi(const string& str, size_t *idx = 0, int base = 10);
long ...
Cancel/kill window.setTimeout() before it happens
...clear out a status, for example. I have a few of these that hang out for 10 seconds or more and if the user gets clicking around the action can occur at incorrect time intervals.
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Using C# reflection to call a constructor
...ic Addition(int a)
{
Console.WriteLine("Constructor called, a={0}", a);
}
}
class Test
{
static void Main()
{
Type type = typeof(Addition);
ConstructorInfo ctor = type.GetConstructor(new[] { typeof(int) });
object instance = ctor.Invoke(new object[] {...
Getting attributes of Enum's value
...tribute), false);
var description = ((DescriptionAttribute)valueAttributes[0]).Description;
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How to get year/month/day from a date object?
alert(dateObj) gives Wed Dec 30 2009 00:00:00 GMT+0800
16 Answers
16
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How to read/write a boolean when implementing the Parcelable interface?
...s how I'd do it...
writeToParcel:
dest.writeByte((byte) (myBoolean ? 1 : 0)); //if myBoolean == true, byte == 1
readFromParcel:
myBoolean = in.readByte() != 0; //myBoolean == true if byte != 0
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Practical usage of setjmp and longjmp in C
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int r ;
printf("(A1)\n");
r = setjmp(bufferA);
if (r == 0) routineB();
printf("(A2) r=%d\n",r);
r = setjmp(bufferA);
if (r == 0) longjmp(bufferB, 20001);
printf("(A3) r=%d\n",r);
r = setjmp(bufferA);
if (r == 0) longjmp(bufferB, 20002);
printf("(A4...